China 
Africa 
- Healthcare providers
- Healthcare proxy
- Healthcare-associated pneumonia
- Healthy Life Years
- Healthy narcissism
- Healthy user bias
- Hearables
- Hearing
- Hearing Voices Movement
- Hearing aids
- Hearing level
- Hearing loss
- Hearing protection device
- Hearing range
- Hearing tests
- Heart
- Heart Protection Study
- Heart arrhythmia
- Heart attack
- Heart beat
- Heart block
- Heart catheterization
- Heart contraction
- Heart development
- Heart disease
- Heart diseases
- Heart failure
- Heart failure with reduced ejection fraction
- Heart lung machine
- Heart murmurs
- Heart rate
- Heart rate monitor
- Heart rate variability
- Heart rhythm
- Heart rupture
- Heart sounds
- Heart surgery
- Heart transplant
- Heart valve
- Heart valves
- Heart ventricles
- Heart-lung transplant
- Heart-type fatty acid binding protein
- HeartScore
- Heartburn
- Heat and moisture exchanger
- Heat cramps
- Heat exhaustion
- Heat illness
- Heat intolerance
- Heat loss
- Heat map
- Heat rash
- Heat retention
- Heat shock factor
- Heat shock proteins
- Heat shock response
- Heat sterilisation
- Heat stroke
- Heat syncope
- Heat therapy
- Heat urticaria
- Heat-stable enterotoxin
- Heating mantle
- Heating pad
- Heavy chain antibody
- Heavy chain disease
- Heavy chains
- Heavy legs
- Heavy metal poisoning
- Heavy metals
- Heavy strand
- Heavy-headedness
- Hebbian learning
- Heberden's node
- Hedera helix
- Hedgehog signaling pathway
- Hedonic adaptation
- Hedonic hunger
- Heel
- Heel effect
- Heel lifts
- Heel spurs
- Heel strike
- Heerfordt syndrome
- Heerfordt's syndrome
- Hegar dilators
- Height of curvature
- Heine Optotechnik
- Heinz body
- Helenalin
- Helianthus annuus
- Helicase
- Helicase-primase complex
- Helices
- Helicobacter
- Helicobacter felis
- Helicobacter hepaticus
- Helicobacter muridarum
- Helicobacter pylori
- Helicobacteraceae
- Helicotrema
- Heligmosomoides polygyrus
- Heliotherapy
- Heliotropism
- Heliox
- Helium
- Helium dilution technique
- Helium nucleus
- Helix
- Helix bundle
- Helix turn helix
- Hellebore
- Heller myotomy
- Hellinger distance
- Helmets
- Helminth
- Helminthiasis
- Help-seeking
- Helper T cells
- Helper viruses
- Helping behavior
- Helplessness
- Hemagglutination
- Hemagglutination inhibition
- Hemagglutinin
- Hemangioblast
- Hemangioblastoma
- Hemangioendothelioma
- Hemangiomas
- Hemangiopericytoma
- Hemangiosarcoma
- Hemarthrosis
- Hematein
- Hematemesis
- Hematinic
- Hematocele
- Hematochezia
- Hematocrit
- Hematologic diseases
- Hematologic malignancy
- Hematologist
- Hematology
- Hematoma block
- Hematomas
- Hematometra
- Hematopoiesis
- Hematopoietic growth factor
- Hematopoietic stem cell niche
- Hematopoietic stem cell transplantation